In a collaborative environment it is beneficial to know if people are really looking at the information in the document. It is easy to find out how long a document was open on a desktop, but it is much more difficult to know if people really read it. In an attempt to answer these kinds of questions, CASCADE keeps track of user navigation throughout a document. CASCADE has the capability to record Mouse Clicks, Scrolling, keypresses, and other user motions. This information is currently kept in a file named ``mymainlog.dat'' in the user's personal directory. In future implementations, this information could be used to make statistical inferences in order to determine how actively a document is being looked at. As patterns are detected in these movements, it may even be possible to tell when an inexperienced user needs assistance.